Device and method for hoisting entire oversized steel reinforcement cage in one step
A hoisting method and steel cage technology, which is applied in the directions of transportation and packaging, load hanging components, cranes, etc., can solve the problems that the quality of the steel cage is greatly affected, cannot meet the construction requirements, and the segmental hoisting takes a long time to achieve Improve construction safety, improve hoisting efficiency, and ensure the effect of hoisting effect
Inactive Publication Date: 2012-01-25
CHINA CONSTR SECOND ENG BUREAU LTD
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Problems solved by technology
[0002] In the construction of foundation pit support, disaster control engineering or foundation engineering, for super-large and super-long steel cages (generally referring to steel cages with a length of more than 30m and a weight of more than 5 tons), the traditional segmental hoisting construction method cannot Meet construction requirements
Because in the actual operation, 1. There is no operation surface for multiple cranes when there is no segmental hoisting. 2. The segmental hoisting takes a long time, and the hole has been formed because the steel cage is not put in for a long time and the concrete is poured, which is easy to cause the hole to collapse. 3. , Whether the joints of the segmented reinforcement cage are firm or not has a great influence on the quality of the reinforcement cage
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[0022] Firstly, the entire reinforcement cage is tied up, and the reinforcement cage is connected with straight threads. During the manufacturing process of the reinforcement cage, the following items should be paid attention to: a. The mechanical connection joints of the main reinforcement should be staggered by 40d to meet the specification requirements. b. Set up a stiffening hoop every 1500mm. c. The first stiffening hoop at the top of the reinforcement cage is made of first-grade steel with a diameter of 20mm, and the inner triangle support is welded with the stiffening hoop. see figure 1 Schematic diagram for the fabrication and welding of lifting rings. Such as figure 2 As shown, the schematic diagram of the hoisting operation of the steel cage uses three 90T, 70T, and 25T truck cranes, of which the 90T truck crane is the main crane 3, and the other two 70T and 25T truck cranes are auxiliary cranes, the second crane and the first crane 2, 1. The first crane 1 selec...
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The invention discloses a method for hoisting an entire oversized steel reinforcement cage in one step. The method mainly comprises the steps of: binding a steel reinforcement cage; arranging hoisting points and configuring a crane; connecting a main hoisting hook with the hoisting points; completing horizontal hoisting of the steel reinforcement cage; converting the steel reinforcement cage froma horizontal state to a vertical state; and directly hoisting the steel reinforcement cage in the vertical standing state to be in place by using a third crane. According to the invention, by jointlyhoisting the oversized steel reinforcement cage by using three hoisting equipment and by skillfully transforming the hoisting points in the angle transformation from the horizontal state to the vertical state, the oversized steel reinforcement cage is hoisted in one step without segmentation and structural variation, so that the efficiency in hoisting operation is increased, in addition, concretecan be poured, so that the advantages of construction safety, operability, capability of meeting construction period requirement and increased efficiency are achieved.
Description
technical field [0001] The invention relates to the technical field of foundation pit support or disaster control engineering and steel cage hoisting construction in foundation engineering. Background technique [0002] In the construction of foundation pit support, disaster control engineering or foundation engineering, for super-large and super-long steel cages (generally referring to steel cages with a length of more than 30m and a weight of more than 5 tons), the traditional segmental hoisting construction method cannot Meet the construction requirements. Because in the actual operation, 1. There is no operation surface for multiple cranes when there is no segmental hoisting. 2. The segmental hoisting takes a long time, and the hole has been formed because the steel cage is not put in for a long time and the concrete is poured, which is easy to cause the hole to collapse. 3. 2. Whether the joints of the segmented reinforcement cage are firm or not has a great influence ...
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IPC IPC(8): B66C23/36
CPCB66C1/62
Inventor 张茅朱文汇吴殿昌石立国袁建华张继川孙媛余德浩
Owner CHINA CONSTR SECOND ENG BUREAU LTD
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